Home / 1,330,019.11-1,995,309.07-431,390.93

Finding the Fourth Proportional to 1,330,019.11, 1,995,309.07 and 431,390.93

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Solution

The fourth proportional to 1,330,019.11, 1,995,309.07 and 431,390.93 is: 647,177.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,019.11 : 1,995,309.07 = 431,390.93 : x
  2. Step 2: Convert to fraction form
    1,330,019.11/1,995,309.07 = 431,390.93/x
  3. Step 3: Cross multiply
    1,330,019.11x = 1,995,309.07 × 431,390.93
  4. Step 4: Simplify right side
    1,330,019.11x = 860,758,241,411.49
  5. Step 5: Solve for x
    x = 860,758,241,411.49/1,330,019.11
  6. Step 6: Final answer
    x = 647,177.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.